[Qgis-user] QGIS slows PC to a point it is unusable
Jeff Hubbs
jhubbslist at att.net
Fri Jan 10 10:11:39 PST 2020
Look, don't throw good money after bad.
You're only going to be able to get so much memory in a laptop. If you
want to do RAM-intensive things and don't have a way to make them less
intensive (i.e., offloading some of the business to PostGIS, etc.) then
you're going to need to be thinking about hardware that can hold a lot
of memory and just using your laptop as a frontend. I also can't
recommend getting away from spinny-thing storage enough unless you
simply need to store as many TiB in as small a space as possible.
I will also heartily recommend getting Windows and other Microsoft
products out of your life. I have a Gentoo Linux machine sitting beside
me here with a full GUI going and it's running on less than 1GiB of its
16GiB of RAM. The PostGIS machine next to it that has no GUI is taking
256_*M*_iB of its 16GiB.
On 1/10/20 10:45 AM, Peter Cornelissen wrote:
> HI Nicolas
>
> Thanks. I'm not happy about messing with the bios though, I think I'll
> leave that and consider a new laptop with more memory. I'll see how it
> goes using GeoPackage to startw thi and take it from there.
>
> Peter
> ------------------------------------------------------------------------
> *From:* Nicolas Cadieux <nicolas.cadieux at archeotec.ca>
> *Sent:* 10 January 2020 12:42
> *To:* Peter Cornelissen <peter at cornelissen.org.uk>
> *Cc:* Alexandre Neto <senhor.neto at gmail.com>; QGIS User
> <qgis-user at lists.osgeo.org>
> *Subject:* Re: [Qgis-user] QGIS slows PC to a point it is unusable
> Hi,
>
> Try going into the computer bios. Perhaps you can reduce the memory
> allocation for the video card. Nice to know GeoPackage option seems
> to help.
>
> Nicolas Cadieux
>
>> Le 10 janv. 2020 à 03:01, Peter Cornelissen
>> <peter at cornelissen.org.uk> a écrit :
>>
>>
>> Sorry I meant to say that the memory IS the problem!!
>>
>> On 10 Jan 2020 07:58, peter at cornelissen.org.uk wrote:
>>
>> Hi guy
>>
>> Thanks for the feedback. I've checked and as my PC slows down it
>> reaches the point where QGIS is using 79% of the memory, so
>> there's no problem. Unfortunately there's not much I can do about
>> it as it is a laptop and is already at its maximum of 8GB and is
>> using 1.8GB for the video. I'll rebuild using Geo Packages as
>> that seems like the way forward. I can't really make use of
>> PostGIS as I need to port to QField.
>>
>> Peter
>>
>> On 9 Jan 2020 23:54, Nicolas Cadieux
>> <nicolas.cadieux at archeotec.ca> wrote:
>>
>> Hi,
>>
>> You are likely running out of memory. Do a
>> control-alt-delete and look at the memory usage. Look at the
>> memory, disk and cpu usage before starting QGIS and once the
>> project is loaded and working. Turn off unwanted plugins.
>> Make sure you don’t have a virus or some background process
>> using your cpus. You should probably have 8 to 16 GB of
>> memory. Is this a laptop? Is the laptop sharing the video
>> memory with the system memory?
>>
>> Nicolas Cadieux
>>
>> Le 9 janv. 2020 à 18:21, Alexandre Neto
>> <senhor.neto at gmail.com> a écrit :
>>
>>
>> Hi Peter,
>>
>> Try to use Spatialite, Geopackage or (even better)
>> PostGIS to store your data and create indexes both on the
>> geometries, but also on the fields used on the rules you
>> mentioned. That can give you a nice boost.
>>
>> Hope it helps,
>>
>> Alexandre Neto
>> QGIS Support
>> www.QCooperative.net
>> <https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fsmex-ctp.trendmicro.com%3A443%2Fwis%2Fclicktime%2Fv1%2Fquery%3Furl%3Dhttp%253a%252f%252fwww.QCooperative.net%26umid%3D78acbac1-d0a0-4165-8391-f7bc9498c22c%26auth%3Dbf81fa88bf46c441e3fa0c29e31e35617988196f-aeddc0339af5f50edc3ba0398521cba4a48bd09f&data=02%7C01%7C%7C0a6fe8d2bc5846f611a508d795ca9542%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637142569628060192&sdata=CIdLZHE1E%2FfBMx1H55Kjyuxd5BR4N%2BfUzoQMW51ViNg%3D&reserved=0>
>>
>> A quinta, 9/01/2020, 20:42, Peter Cornelissen
>> <peter at cornelissen.org.uk
>> <mailto:peter at cornelissen.org.uk>> escreveu:
>>
>> Hi
>>
>> I am finding that although my ShapeFIle tables in
>> QGIS are not huge, my Windows 10 PC virtually comes
>> to a grinding halt and becomes unusable once I get to
>> something like 50 layers. I am using about 6 or 7
>> ShapeFiles with different filters. I think it is
>> related to the fact that approx. most of them having
>> a rule based styles, some with about 20 rules per layer.
>>
>> Restarting the PC sorts things out for a while, but
>> soon as I start working on the project it quickly
>> gets slower and again comes to a point where it again
>> slows right down.
>>
>> I've not seen anything relate to this issue online
>> and I've seen tables which must be huge. Is it likely
>> to be my PC or am I using the wrong methods? Would I
>> be better using SpatiaLite to store the tables?
>>
>> Thought?
>>
>> Peter
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